Brian John Allsop (1935–1989) was an Australian professional rugby league footballer.
He played in the 1950s and 1960s for the New South Wales Rugby League.
[1] An Eastern Suburbs junior, Allsop made it into the first grade side in 1955.
In that season he was the NSWRFL, leading try-scorer with 18 tries scored in his 17 matches that year.
In one match that year against the Parramatta Eels, he scored 5 tries.